Two field experiments were conducted through 2006 and 2007 growing seasons at Giza Governorate. Selected fields were naturally infested with Fusarium solani and Rhizoctonia solani. The ability of three bioagents to control these two root-rot pathogenic fungi, i.e., Fusarium solani and Rhizoctonia solani was tested in vitro, under greenhouse and field conditions. all the tested bioagents, i.e., Trichoderma album, T. lignorum and T. harzianum reduced the radial growth of the two tested pathogenic fungi and suppressed the disease incidence. The effect of soil solarization and biological application using Trichoderma isolates in combination form on bean root-rot disease incidence was evaluated under field conditions during two successive growing seasons 2007 and 2008. Application of soil mulching for six weeks using 50 micron thick transparent polyethylene sheets was carried out. Soil solarization reduced significantly root-rot disease of bean. Solarization and biological treatments both in combination reduced significantly root-rot incidence and increased the seed quality (100-seed weight) and quantity (seed yield/plot) during the tested seasons. The average of disease reduction was ca 65, 42 and 34% with T. harzianum, T. lignorum and T. album, respectively, after 60 days.